Fitz \f(i)-tz\ as a boy's name is pronounced fits. It is of Old French origin, and the meaning of Fitz is "son of". Usually used as surname prefix. Derives from the Norman "filz" or "son". See Fitzpatrick, Fitzhugh, Fitzgerald, and Fitzroy.
Baby names that sound like Fitz are Vitus, Vitas and Waits. Other similar baby names are Fritz, Fonz, Fido, Fitch, Fritzi, Frits, Matz and Vito.